Apparatus for making molds



(No Modem 2 Sheets-Shet 1..

E. REDDY.

APPARATUS FOR MAKING MOLDS. No. 396,893. Patented Jan. 29, 1889.

WITNESSES: uvvmrom A Q g ATTORNEYS.

2 Sheets-Sheet 2. E. REDDY.

APPARATUS FOR MAKING MOLDS.

Patented Jan. 29; 1889.

n. r-znna Plmln-Lilhogmphur. Wilsllinalm'l. u. c.

(No Model.)

the mold.

UNITED STATES PATENT OFFICE.

EDWARDREDDY, or LITTLE FALLS, NEW YORK.

APPARATUS FOR MAKING MOLDS.

SPECIFICATION forming part of Letters Patent No. 396,893, dated January29, 1889.

Application filed November 8, 1888. Serial No. 290,265. (No model.)

To all whom, it may concern:

Be it known that I, EDWARD REDDY, of Little Falls, in the county ofllerkimer and State of New York, have invented a new and ImprovedApparatus for Making Molds, of which the following is a full, clear, andexact description.

I employ two sets of patterns, which I mold in the sand facing eachother, one portion of each set of patterns being arranged to form a gateor passage from one mold to the other, a single sprue being formed bymeans of a removable core in one section of The patterns are attached tore movable plates adapted to be held in the flask while the two innersections of the mold are formed. The two outer sections of the mold areformed upon the backs of the said plates, one being provided with aspruccore, and then the plates are removed and the four sections are puttogetl'ier, making the mold complete.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorrespondin parts in all the figures.

Figure .l is a plan view of my new castingtlask shown open in the centerand provided with the plates to which the patterns are secured. Fig. 3is a sectional elevation of the entire flask, and Fig. 4: is a similarview of the flask and molds ready for pouring the metal.

A B represent two frames attached together at the edges, preferably bythe hinges a a, so that said frames may be conveniently opened out, asshown in Figs. 1 and 2, and closed, as shown in 3 and 4;. The outeredges of the said frames A B are provided with pins l) 1:. O I)represent plates adapted to be placed upon said pins, as shown in Fig.3, to properly connect said plates with said frames. Upon one or both ofthe surfaces of each of said plates are secured the patterns E F andgates E F.

In Fig. 23 the portions ff of the patterns are placed upon the outersurfaces of the plates opposite to the main portion of the patterns.

G H represent two outer frames adapted to be placed upon the pins l) b,for connecting them, respectively, with the frames A B, as shown inFigs. 3 and l.

J represents the tapering sprue-core, at tached to the plateC by a studor pin, 1', or

Fig. 2 is a side elevation of the same.

other suitable means, in line with the gates E F.

In use the flask is first to be provided with the plates 0 D, having thepatterns attached or placed thereon, the said plates being placedbetween the sections A II and B G of the flask, with the patterns facingeach other when the flask is closed. The flask is then opened in themiddle and two sections of the mold formed-that is, frames A and 1:3 are[illed and rammed on plates C D over the patterns. The flask. is thenclosed and the two outer sections of the mold formed in frames G Illupon the outer surfaces of the plates 1). Frame ll is first filled andrammed and then removed from frame B, and plate D and its patterns andgate removed. The frame II is then replaced upon the frame B, and theflask is then reversed. In tilling frame G the tapering spruce-cored isfitted in the center of the plate (1, in line with the gates E F. Afterthis .is filled and rammed, the said sprnc-core is removed, and theframe G is lifted off from frame A and the plate 0 removed, drawing thepatterns and gate attached thereto. The frame G is then replaced uponframe A, thus completing the mold ready for pouring. In this manner itwill be seen that the bottom at and top a of the mold are each formed oftwo separate and independent sections of sand, and that both molds maybe filled at a single pouring through a single sprue, M.

Having thus described my invention, what I claim as new, an d desire tosecure by Letters Patent, is

1. The apparatus for making molds herein shown, and described,consisting of inner and top and bottom frames adapted to be placedtogether, in combination with patternplates adapted to hold the patternsand to be held between the frames for forming the mold, and to beremoved from the frames for drawing the patterns, substantially asdescribed.

2. The removable and oppositely-placed plates C I), having patterns E F,secured to ,the plates, formed with coinciding gates E F, in combinationwith the. separate frames of the flask, substantially as described.

EDWARD REDDY.

Witnesses:

EDWARD HURLEY, EDWARD WALSI-L

